a) Interpreted the analytical data reported, you should include reference to the IR, and NMR chemical shifts, integration and observed splitting patterns? b) Identify the compound which corresponds to the unknown, and provide a reason? c) Provide reasons why the other 8 structures do not fit with the reported analytical data?
a) Interpreted the analytical data reported, you should include reference to the IR, and NMR chemical shifts, integration and observed splitting patterns? b) Identify the compound which corresponds to the unknown, and provide a reason? c) Provide reasons why the other 8 structures do not fit with the reported analytical data?
Chapter13: Structure Determination: Nuclear Magnetic Resonance Spectroscopy
Section13.8: More Complex Spin–spin Splitting Patterns
Problem 15P: 3-Bromo-1-phenyl-1-propene shows a complex NMR spectrum in which the vinylic proton at C2 is coupled...
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Question
a) Interpreted the analytical data reported, you should include reference to the IR, and NMR chemical shifts, integration and observed splitting patterns?
b) Identify the compound which corresponds to the unknown, and provide a reason?
c) Provide reasons why the other 8 structures do not fit with the reported
analytical data?
![You are asked to identify an unknown compound, which has the following analytical
data:
6
5
PPM
3
Chemical Shift
Integration
1
Multiplicity
8.28
7.95
1
d
7.48
1
6.99
1
d
4.11
2
b.
2.81
S
1.34
3
The peak at 8.28 ppm is found to disappear when the NMR sample is treated with
D20
The IR spectrum of the unknown has the following key peaks;
a sharp strong peak at 1680 cm1
a broad signal at 3250 cm-1
The compound has a molecular weight of 213.66
You have been provided with 9 possible structures of the unknown compound.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb65e6dc1-4844-446a-a047-1cef6bcf0eee%2F000538cf-9ec3-47d6-b04f-725e85069396%2Fffoywin_processed.png&w=3840&q=75)
Transcribed Image Text:You are asked to identify an unknown compound, which has the following analytical
data:
6
5
PPM
3
Chemical Shift
Integration
1
Multiplicity
8.28
7.95
1
d
7.48
1
6.99
1
d
4.11
2
b.
2.81
S
1.34
3
The peak at 8.28 ppm is found to disappear when the NMR sample is treated with
D20
The IR spectrum of the unknown has the following key peaks;
a sharp strong peak at 1680 cm1
a broad signal at 3250 cm-1
The compound has a molecular weight of 213.66
You have been provided with 9 possible structures of the unknown compound.
![`NH2
`F
Strucutre 1
Strucutre 2
Strucutre 3
F.
`NH2
Strucutre 4
Strucutre 5
Strucutre 6
CI
`N'
H
`CI
`NH2
Strucutre 7
Strucutre 8
Strucutre 9
ZI](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb65e6dc1-4844-446a-a047-1cef6bcf0eee%2F000538cf-9ec3-47d6-b04f-725e85069396%2Fa4zr5ba_processed.png&w=3840&q=75)
Transcribed Image Text:`NH2
`F
Strucutre 1
Strucutre 2
Strucutre 3
F.
`NH2
Strucutre 4
Strucutre 5
Strucutre 6
CI
`N'
H
`CI
`NH2
Strucutre 7
Strucutre 8
Strucutre 9
ZI
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